Connected: An Internet Encyclopedia
RFC 822 - 4.4. ORIGINATOR FIELDS

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### 4.4. ORIGINATOR FIELDS

The standard allows only a subset of the combinations possible with the From, Sender, Reply-To, Resent-From, Resent-Sender, and Resent-Reply-To fields. The limitation is intentional.

4.4.1. FROM / RESENT-FROM
4.4.2. SENDER / RESENT-SENDER
4.4.3. REPLY-TO / RESENT-REPLY-TO
4.4.4. AUTOMATIC USE OF FROM / SENDER / REPLY-TO

Next: 4.4.1. FROM / RESENT-FROM

Connected: An Internet Encyclopedia
RFC 822 - 4.4. ORIGINATOR FIELDS